74 lines
1.8 KiB
C++
74 lines
1.8 KiB
C++
#ifndef FILESYSTEM_H
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#define FILESYSTEM_H
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#include "iappsystem.h"
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#include "tier0/platform.h"
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#include "tier1/utlbuffer.h"
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enum EFileMode
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{
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FILEMODE_READ = 0x01,
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FILEMODE_WRITE = 0x02,
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FILEMODE_APPEND = 0x04,
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};
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enum ESeekMode
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{
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SEEKMODE_RELATIVE_CURRENT,
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SEEKMODE_RELATIVE_START,
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SEEKMODE_RELATIVE_END,
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};
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abstract_class IFileSystem;
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class IFileHandle
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{
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public:
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IFileSystem *m_pFileSystem;
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};
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abstract_class IDirectoryHandle
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{
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};
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//----------------------------------------------------------------------------
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// IFileSystem is an app system which manages files, could have different
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// file systems etc. Because of that there is base file system which manages
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// others. PAK files are opened first, then mounted stuff comes second and
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// host's system last.
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//----------------------------------------------------------------------------
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abstract_class IFileSystem: public IAppSystem
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{
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public:
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virtual IFileHandle *Open( const char *szFileName, int eOpCode ) = 0;
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virtual size_t Write( IFileHandle *pFile, const void *pData, size_t nDataSize ) = 0;
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virtual size_t Read( IFileHandle *pFile, void *pData, size_t nDataSize ) = 0;
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virtual size_t Seek( IFileHandle *pFile, ESeekMode eSeekMode, size_t nOffset ) = 0;
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virtual size_t Tell( IFileHandle *pFile ) = 0;
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virtual size_t Size( IFileHandle *pFile ) = 0;
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virtual void Close( IFileHandle *pFile ) = 0;
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// Some cool stuff
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virtual CUtlBuffer<unsigned char> Read( IFileHandle *pFile ) = 0;
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// Leaks memory
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// Should be cleaned by the user
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virtual const char *ReadString( IFileHandle *pFile ) = 0;
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// Directory stuff
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virtual IDirectoryHandle *OpenDir( const char *szDirName ) = 0;
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virtual void CloseDir( IDirectoryHandle *pDir ) = 0;
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IFileSystem *m_pNext;
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void RegisterFileSystem();
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};
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#define FILESYSTEM_INTERFACE_VERSION "FileSystem001"
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extern IFileSystem *filesystem;
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#endif
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